Jar-cover fastening.



No. 7|7,388. Patented Dec. 30, |902.

J.`s. GILEs. v JAR COVER FASTENING.

(Application tiled Oct. 4,' 1902.)

(No Model.)

" v l C' llllll umn NrTEn STATESN `PATENT OFFICE..

JOHN S. GILES, OF CHICAGO, ILLINOIS.

JAR-.COVER FAsTENlNc.

SPECIFICATION forming part of Letters Patent No. 717,388, dated December 30, 1902.

Application filed October 4, 1902. Serial No. 125,862. (No model.)

T0 a/ZZ whom, it' ntcty concern:

Be it known that I, JOHN S. GILES, a citizen of the United States, residing at Chicago, in the county of Cook and State oflllinois, have invented a certain new and useful Improvement in .Tar-Cover Fastenings, of which the following is a specification.

The objects of the present invention are to furnish a simple, effective, and reliable fastening for retaining the covers of jars, more particularly fruit and Vpreserve jars, in place after the jar has been filled; to insure the forcing of the cover down and tightly cornpressing the packing between the rim of the cover and a ledge on the neck end of the jar; to cause the fastening-clamp to press on the cover on opposite sides and transmit an equal or uniform pressure around the rim of the cover and act to compress .the packing, and to furnish a fastening-clamp which can be readily applied and when in position will act to press on the cover and hold the cover firmly in place and which can be readily and quickly detached for removal of the cover.

The invention consists in the features of construction and combinations of parts hereinafter described and claimed.

In the drawings, Figure l is an elevation of a jar with the cover thereon and the fasteningclamp in place; Fig. 2, a sectional elevation of the jar as in Fig. 1 with the body of the jar broken off at the bottom; Fig. 3, a top or plan view of the jar as in Fig. 1; Fig. 4, atop or plan view showing two fastening-clamps instead of one; Fig. 5, an elevation of the upper end of the jar with the cover thereon, showing the two fastening-clamps as in Figt;A and Fig. 6, a detail showing an engaging end of the fastening-clamp.

The jar shown can be made of glass or other suitable material and has a body A with a neck a, extending around which is a circumferential ledge ct', having a iiat upper face for the reception of-the packing, and the under face of which is also preferably of a flat nature. The `cover B for the jar has a depending annular flangevor rim l) `with an interior diameter to enter the cover on the portion of theneck extending above the circumferential flange a of the neck. The top of the cover has an annular depressed groove b adjacent to an annular rib b2, which rib, as shown, lies between the groove b and a groove b3, which groove leaves a circular dat face at the center of the cover on the `upper side.4

The fastening-clamp C is made, preferably, of a strip of iiat metal, but could be made of wire, ifso desired. Thestrip of metal is bent, so as to have at each end a depending side arm c, and the body of the clamp has depressions formed therein each side of the center longitudinally, which'depressions formpoints c to enter the annular groove b', the contour of the points beingA approximately the same as the curvature of the depression-for the groove, as shown in Fig. 2. A One ofthe side arms c has its end c2 inwardly turned, and, as shown, the edge of the turned end is cut on a circle c3, which circle preferably is the circle of the neck of the jar, so that the turned end c2 cane'be passed under the ledge a and have the circle of its end iitagainst the face of theneck. The other side arm c of the clamp has an inward curve forming acontact c4 to abut against the under face of the ledge and an outward curve or bend forming a iinger-piece c5, by means of which the contact can be forced beneath the ledge and disengaged therefrom easily.

In use a packing D, of india-rubber or other suitable material, is placed around the upper end of the neck of the jar, resting on the upper face of the yshoulder or ledge a'. The cover is placed in position for the under face of the'iiange or riin b to rest on the packing, and the clamp C is then applied to the jar, and in applying the clamp the side arm c, having the catch end c2, is placed in position for the end c2 to engage with the under edge of the ledge a', and the opposite side arm of the clamp is forced down for the catch or contactc4 to pass beneath the ledge, and when the catch end c2 and the catch end c4 are both engaged with the ledge a. the cover will be pressed down snugly to the packing and will be held firmly in position, making a tight joint for the cover on the jar. The act of forcing the clamp to .place after the catch end c2 is engaged first causes thel bend or point c' adjacent to the arm having the catch end c2 to enter the annular groove b2, contacting the outer face of the groove, which tends to force the cover tightly down at that point, and the further depression of the clamp at the end.

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having the catch or contact c4 forces the bend or point c at the end of the clamp into the annular groove bearing against the inner face of the groove, which tends to force the cover down on that side, with the result that the clamp when snapped into place has a double bearing and leverage by which the cover will be forced down uniformly and will be held snugly in position when the clamp is fully applied. The clamp is removed by pulling outward on the finger-piece or lift c5, disengaging the catch c4 from the ledge and allowing the clamp to be removed.

The arrangement shown in Figs. l, 2, and 3 employs a single clamp; but two clamps can be employed, as shown in Figs. 4 and 5, one clamp crossing over the other at the center. The two clamps are attached as described in applying the clamp to Figs. l, 2, and 3, and two clamps are desirable for use with large jars, where the pressure from a single clamp might not be sufficient to force the cover down at all points onto the packing.

The effectiveness of the clamp, whether single or double, arises from the fact that the annular groove and ledge of the cover furnish a double bearing for the bends or points of the clamp, which bearings are on opposite sides of the cover and between the center of the cover and the periphery thereof". These bearings are of a nature which enables the fastening-clamp to perform its oce without having the body of the clamp contact the upper face of the cover, thus giving the full benefit of the downward force or pressure of the clainpat two points and clear of interference from the cover. The tendency of the initial engagement of the clamp with the cover is to force the cover tightly against the packing on the side of the iirst engagement of the clamp, owing to the formation and action ofthe bend or point c in the clamp and the groove and rib in the cover, with the result of preventing side slipping or movement of the cover in forcing the other arm of the clamp into engagement with the ledge,'and the clamp has a double bearing and a double leverage by reason of the engagement of the catch ends of the side arms of the clamp with the under side of the ledge and the pressure of the points or bends of the body of the clamp against the walls of the receivinggroove therefor in the cover.' It will thus be seen that the clamp while simple in construction is very effective in use, as it insures a uniform pressure on the cover by which the cover will be forced evenly onto the packing, tightly compressing the packing between the face of the rim of the cover and the upper face of the ledge, making a non-leaking jar.

What I regard as new, and desire to secure by Letters Patent, is-

1. In a fruit-jar, the combination of a jarbody having a neck with a projecting circumferential ledge, a cover having a depending rim and provided with an annular groove in its upper face, and a fastening-clamp having its body provided with engaging points or bends entering the annular groove of the cover and having side arms at the ends,4each side arm providedwith a catch end for engagement with the ledge of the neck on the under side, substantially as described.

2. In a fruit-jar, the combination of a jarbody having a neck with a projecting circumferential ledge, a cover having a depending rim and provided with an annular groove and rib on its upper face, and a fastening-clamp havingits body provided with engaging points or bends entering the annular groove and engaging the rib of the cover and having side arms at the end, each side arm provided with a catch end for engagement with the ledge of the neck on the under side, substantially as described.

3. In a fruit-jar, the combination of a jarbody having a neck with a projecting circumferential ledge, a cover having a depending f rim and provided with an annular groove in its upper face, a fastening-clamp having its body provided with engaging points or bends entering the annular groove of the cover and having side arms at the ends, each side arm provided with a catch end for engagement with the ledge of the neck on the under side, one of the catch ends having a concave edge and the other catch end having a finger-piece, substantially as described.

4. In a fruit-jar, the combination of a jarbody having a neck with a projecting circumferential ledge, a cover having a depending rim and provided with an annular groove in its upper face, and a fastening-clamp having its body provided with engaging points or bends entering the annular groove of the cover and having side arms at the ends, each side arm provided with a catch end for engagement with the ledge of the neck on the under side, one of the side arms havinga finger-piece, substantially as described.

5. In a fruit-jar, the combination of a jarbody having a neck with a projecting circumferential ledge, a cover having a depending rim and provided with an annular groove in its upper face, a fastening-clamp having its body provided with engaging points or bends entering the annular groove of the cover and having side arms at the ends, each side arm provided with a catch end for engagement with the ledge of the neck on the under side, and a packing interposed between the face of the cover of the rim and the upper face of the ledge on the neck, substantially as described.

JOHN S. GILES.

Witnesses:

THOMAS A. BANNING, OscAuW. BOND.

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